ASTROSAT CZTI

Data Quality Report

Orbit 35425

Creation date: 2022-04-20T20:56:09.766325
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_097T07_9000005072_35425cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35425cztM0_level2_quad_clean.evt
Size (bytes)712,840,32077,748,480
Size679.8 MB 74.1 MB
Events in quadrant A2,866,890531,516
Events in quadrant B10,804,054386,079
Events in quadrant C3,747,853522,291
Events in quadrant D3,766,086496,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122013
B0362002
C0147422
D0148742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597060.100503%
B5970323954.254606%
C59701041.742044%
D59701452.428811%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9407 5972 1 1 0.01% 0.02%
B 9407 5972 2656 2656 28.23% 44.47%
C 9407 5972 78 78 0.83% 1.31%
D 9407 5972 106 106 1.13% 1.77%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 134350 940.81 703 689 142.1
A 13 6 11077 73.12 703 689 142.1
A 13 254 9405 61.35 703 689 142.1
B 4 251 3785205 34695.74 562 548 109.1
B 5 31 1237177 11336.76 562 548 109.1
B 5 15 1223549 11211.83 562 548 109.1
C 0 207 474260 2994.3 679 685 158.2
C 0 10 352627 2225.25 679 685 158.2
C 15 214 246391 1553.54 679 685 158.2
D 7 80 236526 1428.42 676 659 165.1
D 2 250 168175 1014.48 676 659 165.1
D 8 195 163532 986.36 676 659 165.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter